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  • All sections
  • E - Fixed constructions
  • E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels
  • E21F 15/06 - Filling-up mechanically

Patent holdings for IPC class E21F 15/06

Total number of patents in this class: 33

10-year publication summary

2
2
2
6
3
1
6
5
0
1
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
China University of Mining and Technology
1308
15
Strata Products Worldwide, LLC
68
5
Anhui University of Science and Technology
197
2
Jiangsu New Century Jiangnan Environmental Protection Co., Ltd.
3
1
Jri Ingenieria S.A.
2
1
Shandong University
1152
1
Sika Technology AG
3004
1
Technische Universitat Bergakademie Freiberg
109
1
Noaq Flood Protection AB
13
1
Shandong Xinmei Machinery Equipment Co., Ltd
1
1
Wanbao Mining Ltd.
8
1
Xuzhou Zhongkuang Backfilling&mining Technology Co., Ltd
7
1
Drill Tech Drilling & Shoring, Inc.
1
1
Northern Engineering & Technology Corporation (dalian), MCC
3
1
Other owners 0

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